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SiFive System IP
Shield™

Open and Secure Distributed Security Architecture

SiFive Shield provides a comprehensive, pre-validated security architecture designed to harden high performance processor IP against sophisticated physical and logical threats. Shield unifies defensive microarchitecture extensions with turnkey cryptographic accelerators and a robust root of trust providing a cohesive defense coordination across every layer of the compute environment.

  • Scalable security compliance
  • Pre-validated to significantly accelerate time to market 
  • Hardware Cryptographic Accelerator (HCA)
  • System-wide protection through WorldGuard implemented isolation

SiFive Shield
Features

SiFive WorldGuard: Hardware system-level isolation supporting multiple independent execution worlds.

Hardware Cryptographic Accelerator: Side Channel Attack (SCA) resistant engine.

Control Flow Integrity: Landing Pad and Shadow stack instructions that prevent Return/Jump Oriented Programming (ROP/JOP) attacks.

Secure Branch Predictor: Mitigates Spectre-like, speculative execution leaks and forced mispredictions, side-channel vulnerabilities.

Pointer Masking: Helps mitigate buffer overflow and use-after-free exploits.

Fully Digital True Random Number Generator (TRNG): High-entropy generation evaluated against NIST SP 800-90B compliance standards.

Vector Cryptographic Extensions: Accelerated encryption and secure hashing workloads (AES, SHA2, SM3, SM4).

Multi-Layer Debug: Secure access control featuring public key based authentication protocols.

Multi-world Hardware Isolation for System Security

SiFive WorldGuard™ is the foundational architecture for the RISC-V Worlds standard, providing a scalable, multi-world system wide IP solution supporting multi-tenant environments. It safeguards critical memory, cache allocation, and shared peripherals entirely in hardware.

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Product Brief

Learn more about SiFive System IP Series products and benefits by downloading the product brief today or contact our sales team with any questions.

SiFive System IP

SiFive IOMMU Gen 2
Scalable Address Translation - Virtual Machine Security with WorldGuard Integration
SiFive Insight™
Multi-world Hardware Isolation for System Security
SiFive WorldGuard™
Multi-world Hardware Isolation for System Security

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